package com.design.prototype.demo;//附件类

class Attachment {

    private String name; //附件名

    public void setName(String name) {

        this.name = name;

    }

    public String getName() {

        return this.name;

    }

    public void download() {

        System.out.println("下载附件，文件名为" + name);

    }

}